绘制坐标系和点 10.5
Python
# ... (前面代码同上，导入和初始化海龟)
import turtle
# 绘制x轴
pen.penup()
pen.goto(-300, 0) # 移动到画布左侧
pen.pendown()
pen.goto(300, 0) # 画一条水平线作为x轴
pen.write("x", font=("Arial", 14, "normal"))
# 绘制y轴
pen.penup()
pen.goto(0, -200) # 移动到画布底部
pen.pendown()
pen.goto(0, 200) # 画一条垂直线作为y轴
pen.write("y", font=("Arial", 14, "normal"))
# 画原点
pen.penup()
pen.goto(0, 0)
pen.pendown()
pen.dot(8, "black")
pen.write("O(0,0)", font=("Arial", 10, "normal"))
# 现在再画点A和点B...
# ... (接上面的画点代码)
t.done()
